Chemistry, 30.01.2020 18:51 ayoismeisjuam
1. a substance that can be separated into two or more substances only by a chemical change is a(n)
solution
element
mixture
compound
2.
which of the following materials is a substance?
air
gasoline
stainless steel
silver
3.
the first figure in a properly written chemical symbol always is
boldfaced
capitalized
italicized
underlined
4.
which of the following represents a compound?
h
h-3
h2o
o-16
5. what do chemical symbols and formulas represent, respectively?
elements and compounds
atoms and mixtures
compounds and mixtures
elements and ions
Answers: 1
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